Clean hands can be tested on a smart phone
1 clean smart phone screen first
2 place suspect finger on clean screen, unclean hands will show a finger print and clean hands will show no fingerprint
3 send them back to the bathroom if dirty
Clean hands can be tested on a smart phone
1 clean smart phone screen first
2 place suspect finger on clean screen, unclean hands will show a finger print and clean hands will show no fingerprint
3 send them back to the bathroom if dirty
Is this one of those ‘Life Hack’ tips from a magazine?
If not, you appear to have stumbled upon the household item most likely to be treated with an oleophobic coating.
Rule 303 said:
Is this one of those ‘Life Hack’ tips from a magazine?If not, you appear to have stumbled upon the household item most likely to be treated with an oleophobic coating.
Should be ok if the screen is cleaned before and after.
But I could be wrong.
this is one of the most demonstrative hand washing videos I have seen in recent times..
https://www.youtube.com/watch?v=2YuDWCX3OkM
Another way to do it would be to get kids to clean their own phone screens then wash their hands then perform the finger print test.
A hand washing drone that takes a photo of the persons clean hands and scans them at 10 minutes intervals and if it detects they are dirty messages them and if they ignore it is uses a taser to remind them.